15420456564 has 48 divisors (see below), whose sum is σ = 36260250432. Its totient is φ = 5100371712.

The previous prime is 15420456529. The next prime is 15420456593. The reversal of 15420456564 is 46565402451.

It is a super-3 number, since 3×15420456564³ (a number of 32 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1271232 + ... + 1283304.

It is an arithmetic number, because the mean of its divisors is an integer number (755421884).

Almost surely, 2^15420456564 is an apocalyptic number.

It is an amenable number.

15420456564 is an abundant number, since it is smaller than the sum of its proper divisors (20839793868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15420456564 is a wasteful number, since it uses less digits than its factorization.

15420456564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12896 (or 12894 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 15420456564 in words is "fifteen billion, four hundred twenty million, four hundred fifty-six thousand, five hundred sixty-four".